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handle: 10261/92834
[ES] Entre las menos de 10 proteinas secretadas de forma mayoritaria por la especie Lactobacillus plantarum, se encuentra una de unos 30kDa que contiene un fragmento interno sin puntos de corte para las proteasas intestinales más importantes y caracterizado por tener un contenido en serina y treonina de, al menos un 50%. La información genética codificada en este fragmento, denominado péptido ST, ha sido utilizada para producir y purificar dicho péptido y así poder hacer distintos ensayos in vitro. En conjunto, el péptido ST estaría promoviendo el proceso de ignorancia inmunológica de nuestro sistema inmune gastrointestinal hacia las bacterias comensales de nuestro tracto gastrointestinal, favoreciéndose por tanto los mecanismos de la tolerancia oral. Por tanto el péptido ST podría ser utilizado en inmunoterapia, sobre todo en el marco de ciertas enfermedades autoinmunes y de ciertas enfermedades inflamatorias.
[EN] Amongst the fewer than 10 proteins secreted in the largest amounts by the species Lactobacillus plantarum, is one of some 30 kDa that contains an internal fragment without cleavage points for the most important intestinal proteases, which is characterized in that it contains at least 50% serine and threonine. The genetic information encoded in this fragment, called "ST peptide", has been used to produce and to purify said peptide and thus to allow different in-vitro tests. Overall, the ST peptide appears to be promoting the process of immunological ignorance of our gastrointestinal immune system with respect to the bacteria found in our gastrointestinal tract, oral tolerance mechanisms thereby being promoted. Therefore, the ST peptide could be used in immunotherapy, particularly within the context of certain autoimmune diseases and certain inflammatory diseases.
Consejo Superior de Investigaciones Científicas (España), Imperial College London (Gran Bretaña)
A1 Solicitud de patente con informe sobre el estado de la técnica
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